Aircraft internal equipment connection modeling method for dynamics simulation

A technology for internal equipment and aircraft, applied in the direction of instruments, design optimization/simulation, electrical digital data processing, etc., can solve the problems of slow calculation speed and low accuracy of models, reduce model types, ensure stability, and improve simulation efficiency Effect

Pending Publication Date: 2020-05-05
BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above analysis, the present invention aims to provide a method for modeling the connection of aircraft internal equipment for dynamic simulation, in order to solve the problem of slow calculation speed and low accuracy of the model established by the existing method

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  • Aircraft internal equipment connection modeling method for dynamics simulation
  • Aircraft internal equipment connection modeling method for dynamics simulation
  • Aircraft internal equipment connection modeling method for dynamics simulation

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Embodiment Construction

[0043] The preferred embodiments of the present invention are specifically described below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention, and together with the embodiments of the present invention, are used to explain the principles of the present invention, but not to limit the scope of the present invention.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified and limited, the term "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situatio...

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Abstract

The invention relates to an aircraft internal equipment connection modeling method for dynamics simulation, belongs to the technical field of aircraft dynamics modeling, and solves the problems of lowcalculation speed and low precision of a model established by an existing method. The aircraft internal equipment connection modeling method comprises the following steps: constructing a structure model of aircraft internal equipment; determining connection forms of all joints in the structure model; simplifying the connection form of each joint into one of strong connection between structures, shock-absorption-free equipment installation connection, limiting pin or long bolt connection and shock-absorption equipment installation connection; simulating limiting pin or long bolt connection byadopting a one-dimensional beam model; determining model parameters according to a model adopted by the simplified connection form, and establishing models of all joints; conducting meshing on the whole structure model, and completing finite element model building of the whole structure model. According to the method, the calculation process is simplified, and the finite element simulation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of aircraft dynamics modeling, in particular to a method for modeling the connection of internal equipment of an aircraft for dynamics simulation. Background technique [0002] In engineering practice, in order to accurately analyze the dynamic characteristics and predict the response characteristics of the internal equipment of the aircraft, it is necessary to establish a finite element model that can accurately reflect the dynamic characteristics of the actual structure. However, the most important influence on the accuracy of the model during the modeling process of the dynamic model is the dynamic modeling of the connection part. The internal equipment of the aircraft is connected to the aircraft through bolts, and the connection parts involve many complex dynamic factors such as nonlinear characteristics, friction and collision. If these details are described in detail, the model will be extremely compl...

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Application Information

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IPC IPC(8): G06F30/23G06F30/15G06F119/14
CPCY02T90/00
Inventor 蒲东东孙建亮高贵福张青虎
Owner BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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